- #1
Mark Fraser
- 3
- 0
Can you make a wind turbine powered boat or cart that travels forwards directly into a headwind without storing energy at any time?
Like this:
http://www.treehugger.com/files/2007/02/windmill_sailbo.php
It seems to me that it's a bit like making a cart that's geared in such a way as to go farwards when you push backwards against it - which AFAIK is totally impossible.
Can anyone give me a worked example to work out the drag from the wind on the propellor verses the energy it can harness to drive forwards?
TIA.
Like this:
http://www.treehugger.com/files/2007/02/windmill_sailbo.php
It seems to me that it's a bit like making a cart that's geared in such a way as to go farwards when you push backwards against it - which AFAIK is totally impossible.
Can anyone give me a worked example to work out the drag from the wind on the propellor verses the energy it can harness to drive forwards?
TIA.